Isadore Rosenstock ( 1880 - 1956 ) was a French painter. Isadore Rosenstock s works have been put up for auction numerous times, with realized prices varying from 50.02 USD for Still life - vase of flowers in 2014 to 82.39 USD for Still life - flowers in a glass vase in 2014 , based on the size and medium of the artwork.